War Chip Forums

Please login or register.

Login with username, password and session length
Advanced search  

Author Topic: Best tune for this setup  (Read 4826 times)

Alameer

  • Administrator
  • Jr. Member
  • *****
  • Karma: +0/-0
  • Posts: 74
  • Car: 1986 M50B30
    • View Profile
Best tune for this setup
« on: June 28, 2014, 11:36:33 AM »

I bought a WAR chip for my friend, he just rebuilt his engine and i'm wondering what's the best tune for his setup from the already available tunes, or if someone has a tune for something very similar to this setup.

his setup is as follows:
M50 block and head with s52 cams
M54 3.0 crank, rods and pistons
3.5" MAF from a 540 engine
21.5 injectors
euro s50b30 headers
M50 manifold
walbro fuel pump

any help would be appreciated :)
Logged

Lik

  • Newbie
  • *
  • Karma: +0/-0
  • Posts: 6
  • Car: 1989 E30 325i Sedan RHD ECU:173
    • View Profile
Re: Best tune for this setup
« Reply #1 on: July 03, 2014, 04:20:18 AM »

Seems this WAR community is dying... noone replies...
Logged

Alameer

  • Administrator
  • Jr. Member
  • *****
  • Karma: +0/-0
  • Posts: 74
  • Car: 1986 M50B30
    • View Profile
Re: Best tune for this setup
« Reply #2 on: July 11, 2014, 06:26:23 PM »

plz revive this community... !
Logged

millerperformance

  • Administrator
  • Full Member
  • *****
  • Karma: +4/-0
  • Posts: 186
  • Car: The WAR Machine
    • View Profile
Re: Best tune for this setup
« Reply #3 on: August 11, 2014, 07:43:13 PM »

Hi there,

Try this tune as a starting point. M52 OBD1 Manifold 21 Lb Inj 3-5 MAF.mpc

If that doesn't work, email us and we can send you another file we don't have in the WAR Room yet.
Logged

Pistons & Rods | MAF Conversions | Cams | Tuning Packages | Contact | Facebook

Alameer

  • Administrator
  • Jr. Member
  • *****
  • Karma: +0/-0
  • Posts: 74
  • Car: 1986 M50B30
    • View Profile
Re: Best tune for this setup
« Reply #4 on: August 15, 2014, 06:27:27 AM »

thank you.
i have just sent you an email to the info@miller... email
let me know if i should be sending it to another email.

hope to hear from you soon :)
Logged

munich.marauder

  • Newbie
  • *
  • Karma: +0/-0
  • Posts: 2
  • Car: 1994 BMW 325i with M50TU/M52/S50/M54 Frankenmotor
    • View Profile
Re: Best tune for this setup
« Reply #5 on: February 04, 2015, 05:16:00 PM »

I'm putting together something similar, an M52B28 bottom end with a M54 ZHP intake cam (248 degrees, 10.0mm lift) and an S50 exhaust cam (240 degrees, 9.7mm lift), but I want to run the M52 manifold for the half-dozen extra torque in the 3000's (don't get over 4800 RPM very often).  I can run a 3.5" HFM if needed, but would think the 3.0 stocker would be just fine (bonus question: does the over-sized HFM actually affect the tune or have provable results on the dyno?).  I've also got M52 tubular headers and an aftermarket cat-back exhaust, and pink top 21.5# injectors. 
My main question is this: what changes do I need to be making in timing and fuel to switch that tune (M52 OBD1 Manifold 21 Lb Inj 3-5 MAF) from the OBD1 intake manifold to the OBD2 manifold - or any other tune from the OBD1 to OBD2 intake?
Logged

millerperformance

  • Administrator
  • Full Member
  • *****
  • Karma: +4/-0
  • Posts: 186
  • Car: The WAR Machine
    • View Profile
Re: Best tune for this setup
« Reply #6 on: February 05, 2015, 08:39:58 PM »

You can use the 3-5 tunes OR the stock M50 or stock S50 performance tunes as a starting point since you will need to make fuelling adjustments anyway to suit your cam and header mods. You really need a wideband air fuel ratio reading to know what to do with fuel. Some places may be fine, other spots may need more or less fuel, again, it is going to be specific to your setup and the only way of knowing is to know your AFR.

For the timing, you can probably get away with a few more degrees here and there. But, with timing, it is best done on the dyno as you can SEE the changes in power that you might otherwise not really feel on the street when you are doing a bunch of tuning. If timing changes are making a huge difference, you will feel it, but if a degree here and a degree there make 1 or 2 HP improvement, you won't feel that and won't know if your changes are making a difference.
Logged

Pistons & Rods | MAF Conversions | Cams | Tuning Packages | Contact | Facebook